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NetScreen Ranked among the Top 25 Fastest Growing Technology Companies by Deloitte

Sunnyvale, CA - October 14, 2003 - NetScreen Technologies, Inc. (Nasdaq: NSCN) today announced it ranked as the 24th fastest growing technology company on the 2003 Deloitte Technology Fast 500, a ranking of the fastest growing technology companies in North America. Rankings are based on average percentage revenue growth over five years, from 1998 - 2002.

NetScreen attributes its growth to its accurate prediction of network security market inflection points - including the migration of security functionality from software to purpose-built appliances as well as the movement from intrusion detection to detection and prevention - and successful execution to capitalize on those inflection points.

“NetScreen has stayed several steps ahead of our competition by anticipating customers’ network security needs; clearly understanding their requirements, such as helping to increase security without jeopardizing network performance; and developing products designed to address these elements,” said Robert Thomas, NetScreen president and CEO. “NetScreen’s Fast 500 ranking among the top 25 demonstrates that our focus and model is paying off.”

Mark A. Evans, national managing partner of Deloitte’s Technology, Media & Telecommunications Group, commented, “Growing the topline enough to make the Deloitte Technology 500 is especially meaningful during tough economic times for the technology sector. We congratulate NetScreen on not only making the list, but ranking among the top 25.”

Fast500 Selection and Qualifications

The Fast 500 list is compiled from Deloitte’s 20 regional North American fast 50 programs, nominations submitted directly to the Fast 500, and public company database research. To qualify for the Fast 500, entrants must have had 1998 operating revenues of at least $50,000 USD and $75,000 CD for the United States and Canada, respectively; and 2002 operating revenues must be at least $1 million USD or CD.

About Deloitte

Deloitte, one of the nation’s leading professional services firms, provides audit, tax, financial advisory services and consulting through nearly 30,000 people in more than 80 U.S. cities. The firm is dedicated to helping its clients and its people excel. Known as an employer of choice for innovative human resources programs, Deloitte has been recognized as one of the “100 Best Companies to Work For in America” by Fortune magazine for six consecutive years. “Deloitte” refers to Deloitte & Touche LLP and affiliated entities. Deloitte is the U.S. member firm of Deloitte Touche Tohmatsu. Deloitte Touche Tohmatsu is a Swiss Verein (association), and, as such, neither Deloitte Touche Tohmatsu nor any of its member firms has any liability for each other’s acts or omissions. Each of the member firms is a separate and independent legal entity operating under the name “Deloitte,” “Deloitte & Touche,” “Deloitte Touche Tohmatsu” or other related names. The services described herein are provided by the U.S. member firm and not by the Deloitte Touche Tohmatsu Verein. For more information, please visit Deloitte’s web site at www.deloitte.com/us.

About NetScreen Technologies

NetScreen Technologies, Inc., is a leading developer of integrated network security solutions that offer the security, performance and total cost of ownership required by enterprises and carriers. NetScreen’s innovative solutions provide key security technologies, such as virtual private network, denial of service protection, firewall and intrusion prevention, in a line of easy-to-manage security appliances and systems. NetScreen is located at 805 11th Ave. Sunnyvale, CA 94089. More information on NetScreen’s products can be found at http://www.netscreen.com or by calling toll free at 1-800-638-8296.

NetScreen and the NetScreen logo are trademarks of NetScreen Technologies, Inc. in the United States and other countries. Other trademarks are the property of their respective owners.

This press release contains forward-looking statements about events and circumstances that have not yet occurred. For example, words such as “will”, “can”, “provide”, “enabling” and “continue”, or other statements in the future tense, are forward-looking statements. Actual outcomes and results may differ materially from expectations in this press release due to a number of risks and uncertainties. Such risks and uncertainties include whether the market for security products will grow as projected, if at all, whether demand for NetScreen products will continue, whether new products, if and when introduced, will be successful and whether products will perform as expected.